10564543620 has 72 divisors (see below), whose sum is σ = 32124357720. Its totient is φ = 2810304000.

The previous prime is 10564543607. The next prime is 10564543621. The reversal of 10564543620 is 2634546501.

10564543620 is a `hidden beast` number, since 1 + 0 + 5 + 645 + 4 + 3 + 6 + 2 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 957407364 + 9607136256 = 30942^2 + 98016^2 .

It is a super-2 number, since 2×10564543620² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (10564543621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1870 + ... + 145370.

It is an arithmetic number, because the mean of its divisors is an integer number (446171635).

Almost surely, 2^10564543620 is an apocalyptic number.

10564543620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10564543620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16062178860).

10564543620 is an abundant number, since it is smaller than the sum of its proper divisors (21559814100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10564543620 is a wasteful number, since it uses less digits than its factorization.

10564543620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143925 (or 143920 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 10564543620 in words is "ten billion, five hundred sixty-four million, five hundred forty-three thousand, six hundred twenty".